How to remove headers in a NSMutableURLRequest?

Question

How can I make a request that contains no headers fields? The requests are being sent to my own server implementation from scratch, which doesn't care about header fields. The request will at most contain only a post body. Let me know if I'm missing something logical.

Please don't tell me about ASIHTTPRequest. Thank you.

Answer 1

As I wanted to remove specific header on a NSMutableURLRequest, I've just found that calling setValue:forHTTPHeaderField: with a nil value actually removes it.

It's not documented by Apple, but it seems quite logical.

Answer 2

For me the code

[request addValue:@"" forHTTPHeaderField:@"User-Agent"];

only added an empty string instead of cleaning the User-Agent. Instead, using setValue fixed it:

[request setValue:@"" forHTTPHeaderField:@"User-Agent"];

Answer 3

I found that for some of the header fields ("User-Agent" is one of them), setting the header value to nil using

[request addValue:nil forHTTPHeaderField:@"User-Agent"];

doesn't actually remove the header field, but rather sets it to a default value!

If you want to actually remove the content, it is enough setting the value to an empty string with

[request addValue:@"" forHTTPHeaderField:@"User-Agent"];